/* ==========================================================================
   IRODORI online-academy (オンラインスクール) — style.css
   Dark-SaaS-Modern: 深紺 × シアン × エレクトリックパープル
   Hero W (大判タイポ + ターミナル背景) / Loader L22 (ターミナルタイプ)
   ========================================================================== */

/* ==========================================================================
   1. CSS VARIABLES
   ========================================================================== */
:root {
  /* Colors */
  --oa-navy:         #0F172A;
  --oa-navy-deep:    #050B17;
  --oa-navy-soft:    #1E293B;
  --oa-navy-card:    #131C2E;
  --oa-cyan:         #06B6D4;
  --oa-cyan-deep:    #0891B2;
  --oa-cyan-soft:    #67E8F9;
  --oa-cyan-glow:    rgba(6, 182, 212, 0.4);
  --oa-purple:       #9168F8;
  --oa-purple-deep:  #6B30E0;
  --oa-purple-soft:  #C4B5FD;
  --oa-text:         #F8FAFC;
  --oa-text-mute:    #94A3B8;
  --oa-text-dim:     #64748B;
  --oa-line:         #334155;
  --oa-line-soft:    #1E293B;
  --oa-line-bright:  rgba(255, 255, 255, 0.08);
  --oa-white:        #FFFFFF;
  --oa-success:      #10B981;
  --oa-error:        #EF4444;

  /* Typography */
  --oa-font-jp: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --oa-font-en: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --oa-font-mono: "JetBrains Mono", "Fira Code", "Consolas", "Menlo", monospace;

  /* Sizes */
  --oa-size-1: 0.75rem;
  --oa-size-2: 0.875rem;
  --oa-size-3: 1rem;
  --oa-size-4: 1.125rem;
  --oa-size-5: 1.25rem;
  --oa-size-6: 1.5rem;
  --oa-size-7: 1.875rem;
  --oa-size-8: 2.25rem;
  --oa-size-9: 3rem;
  --oa-size-10: 3.75rem;
  --oa-size-11: 4.5rem;
  --oa-size-12: 6rem;

  /* Spacing */
  --oa-space-1: 4px;
  --oa-space-2: 8px;
  --oa-space-3: 12px;
  --oa-space-4: 16px;
  --oa-space-5: 24px;
  --oa-space-6: 32px;
  --oa-space-7: 48px;
  --oa-space-8: 64px;
  --oa-space-9: 96px;
  --oa-space-10: 128px;

  /* Layout */
  --oa-container: 1200px;
  --oa-container-wide: 1440px;
  --oa-radius-sm: 4px;
  --oa-radius-md: 8px;
  --oa-radius-lg: 12px;
  --oa-radius-xl: 20px;
  --oa-radius-pill: 999px;

  /* Shadow */
  --oa-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --oa-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --oa-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  --oa-shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.6);
  --oa-glow-cyan: 0 0 24px rgba(6, 182, 212, 0.4);
  --oa-glow-purple: 0 0 24px rgba(139, 92, 246, 0.4);

  /* Transition */
  --oa-trans-fast: 0.18s ease;
  --oa-trans: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --oa-trans-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --oa-z-loader: 9999;
  --oa-z-header: 100;
  --oa-z-modal: 200;
  --oa-z-float: 90;
}

/* ==========================================================================
   2. RESET / BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-3);
  line-height: 1.7;
  color: var(--oa-text);
  background: var(--oa-navy);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, picture, video, svg { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; padding: 0; color: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }
a { color: var(--oa-cyan); text-decoration: none; transition: color var(--oa-trans-fast); }
a:hover { color: var(--oa-cyan-soft); }
ul, ol { padding: 0; margin: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }

.oa-body {
  overflow-x: hidden;
  background: var(--oa-navy);
}

.oa-container {
  max-width: var(--oa-container);
  margin: 0 auto;
  padding-left: var(--oa-space-5);
  padding-right: var(--oa-space-5);
}

.oa-section {
  padding: var(--oa-space-9) 0;
}

@media (max-width: 768px) {
  .oa-section { padding: var(--oa-space-7) 0; }
}

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: 1.4;
  font-weight: 700;
  color: var(--oa-text);
  font-family: var(--oa-font-jp);
  letter-spacing: 0.01em;
}
p { margin: 0; }

.oa-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--oa-space-2);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--oa-cyan);
  margin-bottom: var(--oa-space-3);
  text-transform: uppercase;
}

.oa-eyebrow::before {
  content: "//";
  color: var(--oa-purple);
  font-weight: 700;
}

.oa-h2 {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.3;
  color: var(--oa-text);
}

.oa-h2 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-lead {
  font-size: var(--oa-size-4);
  line-height: 1.85;
  color: var(--oa-text-mute);
  max-width: 720px;
}

.oa-num {
  font-family: var(--oa-font-mono);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.oa-mono {
  font-family: var(--oa-font-mono);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   4. LOADER L22 — ターミナルカーソル + ASCII タイプ (新)
   ========================================================================== */
.oa-loader {
  position: fixed;
  inset: 0;
  z-index: var(--oa-z-loader);
  background: var(--oa-navy-deep);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--oa-space-5);
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.oa-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.oa-loader__terminal {
  background: var(--oa-navy);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-md);
  padding: var(--oa-space-4) var(--oa-space-5);
  min-width: 360px;
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-3);
  color: var(--oa-text);
  box-shadow: var(--oa-shadow-lg);
  position: relative;
}

.oa-loader__terminal::before {
  content: "● ● ●";
  position: absolute;
  top: var(--oa-space-3);
  left: var(--oa-space-4);
  color: var(--oa-text-dim);
  font-size: var(--oa-size-1);
  letter-spacing: 0.4em;
}

.oa-loader__terminal-content {
  margin-top: var(--oa-space-5);
}

.oa-loader__line {
  display: block;
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  line-height: 1.7;
  white-space: nowrap;
  overflow: hidden;
}

.oa-loader__prompt {
  color: var(--oa-cyan);
  margin-right: var(--oa-space-2);
}

.oa-loader__cmd {
  color: var(--oa-text);
  border-right: 2px solid var(--oa-cyan);
  animation: oa-typewriter 1.4s steps(28, end) forwards, oa-blink 0.7s infinite step-end;
  display: inline-block;
  width: 0;
  overflow: hidden;
  vertical-align: bottom;
}

.oa-loader__output {
  color: var(--oa-purple-soft);
  opacity: 0;
  animation: oa-fade-in 0.4s ease 1.5s forwards;
}

.oa-loader__success {
  color: var(--oa-success);
  opacity: 0;
  animation: oa-fade-in 0.4s ease 1.8s forwards;
}

.oa-loader__name {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-cyan);
  letter-spacing: 0.08em;
  opacity: 0;
  animation: oa-fade-up 0.6s ease 1.6s forwards;
}

.oa-loader__sub {
  font-family: var(--oa-font-en);
  font-size: var(--oa-size-2);
  font-weight: 500;
  color: var(--oa-text-mute);
  letter-spacing: 0.18em;
  opacity: 0;
  animation: oa-fade-up 0.6s ease 1.9s forwards;
  text-transform: uppercase;
}

@keyframes oa-typewriter {
  from { width: 0; }
  to { width: 19ch; }
}

@keyframes oa-blink {
  0%, 50% { border-right-color: var(--oa-cyan); }
  51%, 100% { border-right-color: transparent; }
}

@keyframes oa-fade-in {
  to { opacity: 1; }
}

@keyframes oa-fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   5. HEADER — Sticky-Dark
   ========================================================================== */
.oa-header {
  position: sticky;
  top: 0;
  z-index: var(--oa-z-header);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--oa-line-bright);
  transition: box-shadow var(--oa-trans), background var(--oa-trans);
}

.oa-header.is-scrolled {
  box-shadow: var(--oa-shadow-md);
  background: rgba(15, 23, 42, 0.96);
}

.oa-header__inner {
  max-width: var(--oa-container-wide);
  margin: 0 auto;
  padding: var(--oa-space-3) var(--oa-space-5);
  display: flex;
  align-items: center;
  gap: var(--oa-space-5);
  min-height: 68px;
}

.oa-header__logo {
  display: flex;
  align-items: center;
  gap: var(--oa-space-3);
  flex-shrink: 0;
  text-decoration: none;
  color: var(--oa-text);
}

.oa-header__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--oa-radius-md);
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  color: var(--oa-navy);
  display: grid;
  place-items: center;
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-4);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.oa-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.oa-header__logo-jp {
  font-size: var(--oa-size-3);
  font-weight: 700;
  color: var(--oa-text);
  letter-spacing: 0.04em;
}

.oa-header__logo-en {
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--oa-cyan);
  letter-spacing: 0.16em;
  margin-top: 2px;
}

.oa-header__nav {
  margin-left: auto;
  display: flex;
}

.oa-header__nav-list {
  display: flex;
  gap: var(--oa-space-5);
  white-space: nowrap;
}

.oa-header__nav-list a {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-2);
  font-weight: 500;
  color: var(--oa-text-mute);
  letter-spacing: 0.04em;
  position: relative;
  padding: var(--oa-space-2) 0;
  flex-shrink: 0;
  transition: color var(--oa-trans-fast);
}

.oa-header__nav-list a:hover,
.oa-header__nav-list a[aria-current="page"] {
  color: var(--oa-cyan);
}

.oa-header__nav-list a::after {
  content: "";
  position: absolute;
  inset: auto 0 -2px;
  height: 1px;
  background: var(--oa-cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--oa-trans);
}

.oa-header__nav-list a:hover::after,
.oa-header__nav-list a[aria-current="page"]::after { transform: scaleX(1); }

.oa-header__actions {
  display: flex;
  align-items: center;
  gap: var(--oa-space-3);
  flex-shrink: 0;
}

.oa-header__login {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-2);
  font-weight: 500;
  color: var(--oa-text-mute);
  padding: 8px 12px;
  transition: color var(--oa-trans-fast);
}

.oa-header__login:hover { color: var(--oa-cyan); }

.oa-header__cta {
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-cyan-deep) 100%);
  color: var(--oa-navy);
  padding: 10px 22px;
  border-radius: var(--oa-radius-md);
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-2);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform var(--oa-trans-fast), box-shadow var(--oa-trans-fast);
}

.oa-header__cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--oa-glow-cyan);
  color: var(--oa-navy);
}

.oa-header__menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--oa-radius-md);
  background: var(--oa-navy-soft);
  position: relative;
}

.oa-header__menu-btn span {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 1.5px;
  background: var(--oa-cyan);
  transform: translateX(-50%);
}

.oa-header__menu-btn span:nth-child(1) { top: 14px; }
.oa-header__menu-btn span:nth-child(2) { top: 19px; }
.oa-header__menu-btn span:nth-child(3) { top: 24px; }

@media (max-width: 1024px) {
  .oa-header__nav,
  .oa-header__login { display: none; }
  .oa-header__menu-btn { display: block; }
}

/* Drawer */
.oa-drawer {
  position: fixed;
  inset: 68px 0 0;
  z-index: 95;
  background: var(--oa-navy);
  padding: var(--oa-space-7) var(--oa-space-5);
  transform: translateX(100%);
  transition: transform var(--oa-trans);
  overflow-y: auto;
  display: none;
}

.oa-drawer.is-open {
  transform: translateX(0);
  display: block;
}

.oa-drawer__nav a {
  display: block;
  padding: var(--oa-space-4) 0;
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-text);
  border-bottom: 1px solid var(--oa-line);
}

/* ==========================================================================
   6. HERO W — 大判タイポ + ターミナル風背景 + 受講者数カウンター (新)
   ========================================================================== */
.oa-hero {
  position: relative;
  background: var(--oa-navy);
  overflow: hidden;
  padding: var(--oa-space-10) 0 var(--oa-space-9);
  min-height: 88vh;
  display: flex;
  align-items: center;
}

.oa-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.oa-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: brightness(0.5) contrast(1.2);
}

.oa-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.18) 0%, transparent 50%),
    linear-gradient(180deg, rgba(15, 23, 42, 0.6) 0%, var(--oa-navy) 90%);
}

.oa-hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--oa-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--oa-line-soft) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
  pointer-events: none;
  mask-image: radial-gradient(circle at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, black 30%, transparent 80%);
}

.oa-hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--oa-container);
  margin: 0 auto;
  padding: 0 var(--oa-space-5);
  width: 100%;
}

.oa-hero__terminal {
  display: inline-block;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-md);
  padding: 10px 16px;
  margin-bottom: var(--oa-space-5);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  color: var(--oa-cyan-soft);
  letter-spacing: 0.06em;
  backdrop-filter: blur(8px);
}

.oa-hero__terminal::before {
  content: "$ ";
  color: var(--oa-purple);
  font-weight: 700;
}

.oa-hero__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--oa-text);
  letter-spacing: 0.01em;
  margin-bottom: var(--oa-space-5);
  word-break: keep-all;
  overflow-wrap: break-word;
  max-width: 900px;
}

.oa-hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.oa-hero__sub {
  font-size: var(--oa-size-4);
  line-height: 1.85;
  color: var(--oa-text-mute);
  margin-bottom: var(--oa-space-7);
  max-width: 640px;
}

.oa-hero__sub strong {
  color: var(--oa-cyan);
  font-weight: 600;
}

.oa-hero__counters {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--oa-space-5);
  padding: var(--oa-space-5);
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  backdrop-filter: blur(8px);
  margin-bottom: var(--oa-space-7);
  max-width: 720px;
}

.oa-hero__counter {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.oa-hero__counter-num {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-7);
  font-weight: 700;
  color: var(--oa-cyan);
  line-height: 1;
}

.oa-hero__counter-num small {
  font-size: 0.55em;
  font-weight: 600;
  margin-left: 2px;
  color: var(--oa-text);
}

.oa-hero__counter-label {
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  color: var(--oa-text-mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.oa-hero__actions {
  display: flex;
  gap: var(--oa-space-3);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .oa-hero__counters { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .oa-hero__counters { padding: var(--oa-space-3); gap: var(--oa-space-3); }
}

/* Buttons */
.oa-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--oa-space-2);
  padding: 14px 28px;
  border-radius: var(--oa-radius-md);
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-3);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform var(--oa-trans-fast), box-shadow var(--oa-trans-fast), background var(--oa-trans-fast);
  white-space: nowrap;
  border: 1px solid transparent;
}

.oa-btn--primary {
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-cyan-deep) 100%);
  color: var(--oa-navy);
}

.oa-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--oa-glow-cyan);
  color: var(--oa-navy);
}

.oa-btn--purple {
  background: linear-gradient(135deg, var(--oa-purple) 0%, var(--oa-purple-deep) 100%);
  color: var(--oa-text);
}

.oa-btn--purple:hover {
  transform: translateY(-2px);
  box-shadow: var(--oa-glow-purple);
  color: var(--oa-text);
}

.oa-btn--ghost {
  background: transparent;
  color: var(--oa-cyan);
  border-color: var(--oa-cyan);
}

.oa-btn--ghost:hover {
  background: var(--oa-cyan);
  color: var(--oa-navy);
  transform: translateY(-2px);
}

.oa-btn--outline {
  background: rgba(15, 23, 42, 0.4);
  color: var(--oa-text);
  border-color: var(--oa-line);
}

.oa-btn--outline:hover {
  border-color: var(--oa-cyan);
  color: var(--oa-cyan);
  transform: translateY(-2px);
}

.oa-btn__arrow {
  display: inline-block;
  transition: transform var(--oa-trans-fast);
}

.oa-btn:hover .oa-btn__arrow {
  transform: translateX(4px);
}

/* ==========================================================================
   7. ABOUT — 理念
   ========================================================================== */
.oa-about {
  background: var(--oa-navy);
  border-top: 1px solid var(--oa-line-bright);
  position: relative;
}

.oa-about__inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--oa-space-9);
  align-items: center;
}

.oa-about__media {
  position: relative;
  border-radius: var(--oa-radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--oa-shadow-lg);
  border: 1px solid var(--oa-line);
}

.oa-about__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.85);
}

.oa-about__media-glow {
  position: absolute;
  inset: -8px;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  border-radius: var(--oa-radius-lg);
  z-index: -1;
  opacity: 0.5;
  filter: blur(20px);
}

.oa-about__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.875rem, 4.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.4;
  color: var(--oa-text);
  margin-bottom: var(--oa-space-5);
  letter-spacing: 0.01em;
  word-break: keep-all;
}

.oa-about__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-about__text {
  font-size: var(--oa-size-3);
  line-height: 1.95;
  color: var(--oa-text-mute);
  margin-bottom: var(--oa-space-5);
}

.oa-about__text strong {
  color: var(--oa-cyan);
  font-weight: 600;
}

.oa-about__principles {
  display: grid;
  gap: var(--oa-space-3);
  margin-top: var(--oa-space-5);
}

.oa-about__principle {
  display: flex;
  gap: var(--oa-space-3);
  padding: var(--oa-space-3) var(--oa-space-4);
  background: var(--oa-navy-soft);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-md);
}

.oa-about__principle-icon {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-cyan);
  flex-shrink: 0;
}

.oa-about__principle-text {
  font-size: var(--oa-size-2);
  line-height: 1.7;
  color: var(--oa-text);
}

.oa-about__principle-text strong { color: var(--oa-cyan); }

@media (max-width: 900px) {
  .oa-about__inner { grid-template-columns: 1fr; gap: var(--oa-space-6); }
}

/* ==========================================================================
   8. STATS — 4 数値カウンター
   ========================================================================== */
.oa-stats {
  background: var(--oa-navy-deep);
  position: relative;
  border-top: 1px solid var(--oa-line-bright);
  border-bottom: 1px solid var(--oa-line-bright);
}

.oa-stats::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.oa-stats__head {
  text-align: center;
  margin-bottom: var(--oa-space-7);
  position: relative;
}

.oa-stats__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
}

.oa-stats__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-stats__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--oa-space-5);
  position: relative;
}

.oa-stat {
  text-align: center;
  padding: var(--oa-space-6) var(--oa-space-4);
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  transition: transform var(--oa-trans), border var(--oa-trans);
}

.oa-stat:hover {
  transform: translateY(-3px);
  border-color: var(--oa-cyan);
}

.oa-stat__num {
  font-family: var(--oa-font-mono);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  color: var(--oa-cyan);
  line-height: 1;
  margin-bottom: var(--oa-space-2);
}

.oa-stat__num small {
  font-size: 0.4em;
  font-weight: 600;
  margin-left: 4px;
  color: var(--oa-text);
}

.oa-stat__label {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-1);
  letter-spacing: 0.16em;
  color: var(--oa-text-mute);
  text-transform: uppercase;
}

.oa-stat__sub {
  font-size: var(--oa-size-2);
  color: var(--oa-text-mute);
  margin-top: var(--oa-space-2);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .oa-stats__list { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================================
   9. COURSES — 6 コース
   ========================================================================== */
.oa-courses {
  background: var(--oa-navy);
}

.oa-courses__head {
  text-align: center;
  margin-bottom: var(--oa-space-7);
}

.oa-courses__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
  word-break: keep-all;
}

.oa-courses__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-courses__lead {
  font-size: var(--oa-size-4);
  line-height: 1.85;
  color: var(--oa-text-mute);
  margin-top: var(--oa-space-4);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.oa-courses__filter {
  display: flex;
  gap: var(--oa-space-2);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--oa-space-7);
}

.oa-courses__filter-btn {
  padding: 8px 16px;
  border-radius: var(--oa-radius-pill);
  background: var(--oa-navy-soft);
  border: 1px solid var(--oa-line);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 500;
  color: var(--oa-text-mute);
  letter-spacing: 0.08em;
  transition: background var(--oa-trans-fast), color var(--oa-trans-fast), border var(--oa-trans-fast);
}

.oa-courses__filter-btn.is-active,
.oa-courses__filter-btn:hover {
  background: var(--oa-cyan);
  color: var(--oa-navy);
  border-color: var(--oa-cyan);
}

.oa-courses__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--oa-space-5);
}

.oa-course {
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--oa-trans), border var(--oa-trans), box-shadow var(--oa-trans);
}

.oa-course:hover {
  transform: translateY(-4px);
  border-color: var(--oa-cyan);
  box-shadow: var(--oa-shadow-lg);
}

.oa-course__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
}

.oa-course__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.7);
  transition: filter var(--oa-trans-slow), transform var(--oa-trans-slow);
}

.oa-course:hover .oa-course__media img {
  filter: brightness(0.95);
  transform: scale(1.05);
}

.oa-course__tag {
  position: absolute;
  top: var(--oa-space-3);
  left: var(--oa-space-3);
  background: var(--oa-cyan);
  color: var(--oa-navy);
  padding: 3px 10px;
  border-radius: var(--oa-radius-sm);
  font-family: var(--oa-font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.oa-course__tag--design { background: var(--oa-purple); color: var(--oa-text); }
.oa-course__tag--data { background: var(--oa-success); color: var(--oa-navy); }
.oa-course__tag--marketing { background: var(--oa-cyan-soft); color: var(--oa-navy); }
.oa-course__tag--ai { background: var(--oa-purple-soft); color: var(--oa-navy); }
.oa-course__tag--business { background: var(--oa-text-mute); color: var(--oa-navy); }

.oa-course__body {
  padding: var(--oa-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--oa-space-3);
  flex: 1;
}

.oa-course__title {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-text);
  line-height: 1.5;
}

.oa-course__text {
  font-size: var(--oa-size-2);
  line-height: 1.85;
  color: var(--oa-text-mute);
  flex: 1;
}

.oa-course__meta {
  display: flex;
  gap: var(--oa-space-4);
  padding-top: var(--oa-space-3);
  border-top: 1px solid var(--oa-line);
  font-family: var(--oa-font-mono);
  font-size: 0.75rem;
  color: var(--oa-text-mute);
  letter-spacing: 0.06em;
}

.oa-course__meta strong {
  color: var(--oa-cyan);
  font-weight: 700;
}

@media (max-width: 1024px) {
  .oa-courses__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .oa-courses__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   10. DASHBOARD — 学習ダッシュボード風モックアップ
   ========================================================================== */
.oa-dashboard {
  background: var(--oa-navy-deep);
  border-top: 1px solid var(--oa-line-bright);
  border-bottom: 1px solid var(--oa-line-bright);
  position: relative;
}

.oa-dashboard__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--oa-space-7);
  align-items: center;
}

.oa-dashboard__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
  margin-bottom: var(--oa-space-4);
  word-break: keep-all;
}

.oa-dashboard__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-dashboard__text {
  font-size: var(--oa-size-3);
  line-height: 1.95;
  color: var(--oa-text-mute);
  margin-bottom: var(--oa-space-5);
}

.oa-dashboard__features {
  display: grid;
  gap: var(--oa-space-3);
}

.oa-dashboard__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--oa-space-3);
  font-size: var(--oa-size-2);
  color: var(--oa-text);
  line-height: 1.7;
}

.oa-dashboard__feature::before {
  content: ">_";
  font-family: var(--oa-font-mono);
  color: var(--oa-cyan);
  font-weight: 700;
  flex-shrink: 0;
}

/* Mock UI */
.oa-dashboard__mock {
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  padding: var(--oa-space-4);
  box-shadow: var(--oa-shadow-xl);
  position: relative;
  overflow: hidden;
}

.oa-dashboard__mock::before {
  content: "● ● ●";
  position: absolute;
  top: var(--oa-space-3);
  left: var(--oa-space-4);
  color: var(--oa-text-dim);
  font-size: var(--oa-size-1);
  letter-spacing: 0.4em;
}

.oa-dashboard__mock-content {
  margin-top: var(--oa-space-5);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--oa-space-3);
}

.oa-dashboard__widget {
  background: var(--oa-navy);
  padding: var(--oa-space-3) var(--oa-space-4);
  border-radius: var(--oa-radius-md);
  border: 1px solid var(--oa-line);
}

.oa-dashboard__widget-label {
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  color: var(--oa-text-mute);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.oa-dashboard__widget-value {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-7);
  font-weight: 700;
  color: var(--oa-cyan);
  line-height: 1.1;
  margin-top: var(--oa-space-1);
}

.oa-dashboard__widget-value small {
  font-size: 0.45em;
  margin-left: 2px;
  color: var(--oa-text);
}

.oa-dashboard__progress {
  background: var(--oa-navy);
  padding: var(--oa-space-3) var(--oa-space-4);
  border-radius: var(--oa-radius-md);
  border: 1px solid var(--oa-line);
  grid-column: 1 / -1;
}

.oa-dashboard__progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-1);
  color: var(--oa-text-mute);
  letter-spacing: 0.08em;
  margin-bottom: var(--oa-space-2);
}

.oa-dashboard__progress-bar {
  height: 8px;
  background: var(--oa-navy-soft);
  border-radius: 4px;
  overflow: hidden;
}

.oa-dashboard__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  border-radius: 4px;
  width: 68%;
  position: relative;
}

.oa-dashboard__progress-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 70%, rgba(255, 255, 255, 0.4) 100%);
  animation: oa-shimmer 2s infinite;
}

@keyframes oa-shimmer {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

@media (max-width: 900px) {
  .oa-dashboard__inner { grid-template-columns: 1fr; }
}

/* ==========================================================================
   11. TEACHERS — 4 名
   ========================================================================== */
.oa-teachers {
  background: var(--oa-navy);
}

.oa-teachers__head {
  text-align: center;
  margin-bottom: var(--oa-space-7);
}

.oa-teachers__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
}

.oa-teachers__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-teachers__lead {
  font-size: var(--oa-size-4);
  line-height: 1.85;
  color: var(--oa-text-mute);
  margin-top: var(--oa-space-4);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.oa-teachers__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--oa-space-5);
}

.oa-teacher {
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--oa-trans), border var(--oa-trans);
}

.oa-teacher:hover {
  transform: translateY(-4px);
  border-color: var(--oa-purple);
}

.oa-teacher__media {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--oa-navy-soft);
  position: relative;
}

.oa-teacher__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.85);
  transition: filter var(--oa-trans);
}

.oa-teacher:hover .oa-teacher__media img {
  filter: brightness(1);
}

.oa-teacher__body {
  padding: var(--oa-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--oa-space-2);
}

.oa-teacher__role {
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--oa-cyan);
  text-transform: uppercase;
}

.oa-teacher__name {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-text);
}

.oa-teacher__bio {
  font-size: var(--oa-size-2);
  color: var(--oa-text-mute);
  line-height: 1.7;
}

.oa-teacher__skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--oa-space-1);
  margin-top: var(--oa-space-3);
  padding-top: var(--oa-space-3);
  border-top: 1px solid var(--oa-line);
}

.oa-teacher__skill {
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  color: var(--oa-cyan);
  background: rgba(6, 182, 212, 0.12);
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: 0.04em;
}

@media (max-width: 1024px) {
  .oa-teachers__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .oa-teachers__grid { grid-template-columns: 1fr 1fr; gap: var(--oa-space-3); }
  .oa-teacher__body { padding: var(--oa-space-3); }
}

/* ==========================================================================
   12. PRICING — 月額 3 プラン
   ========================================================================== */
.oa-pricing {
  background: var(--oa-navy-deep);
  border-top: 1px solid var(--oa-line-bright);
  border-bottom: 1px solid var(--oa-line-bright);
  position: relative;
}

.oa-pricing::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(139, 92, 246, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.oa-pricing__head {
  text-align: center;
  margin-bottom: var(--oa-space-7);
  position: relative;
}

.oa-pricing__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
}

.oa-pricing__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-pricing__toggle {
  display: inline-flex;
  background: var(--oa-navy-soft);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-pill);
  padding: 4px;
  margin-top: var(--oa-space-5);
  position: relative;
}

.oa-pricing__toggle-btn {
  padding: 8px 24px;
  border-radius: var(--oa-radius-pill);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 600;
  color: var(--oa-text-mute);
  letter-spacing: 0.08em;
  transition: background var(--oa-trans-fast), color var(--oa-trans-fast);
}

.oa-pricing__toggle-btn.is-active {
  background: var(--oa-cyan);
  color: var(--oa-navy);
}

.oa-pricing__toggle-badge {
  background: var(--oa-purple);
  color: var(--oa-text);
  padding: 1px 6px;
  border-radius: 2px;
  font-size: 0.6rem;
  margin-left: 6px;
  font-weight: 700;
}

.oa-pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--oa-space-5);
  align-items: stretch;
  position: relative;
}

.oa-plan {
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  padding: var(--oa-space-7) var(--oa-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--oa-space-4);
  transition: transform var(--oa-trans), border var(--oa-trans);
  position: relative;
}

.oa-plan:hover {
  transform: translateY(-4px);
  border-color: var(--oa-cyan);
}

.oa-plan--featured {
  border-color: var(--oa-cyan);
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.08) 0%, var(--oa-navy-card) 50%);
  position: relative;
}

.oa-plan--featured::before {
  content: "Most Popular";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  color: var(--oa-navy);
  padding: 4px 16px;
  border-radius: var(--oa-radius-pill);
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.oa-plan__name {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--oa-cyan);
  text-transform: uppercase;
}

.oa-plan__price {
  display: flex;
  align-items: baseline;
  gap: var(--oa-space-2);
}

.oa-plan__price-num {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-9);
  font-weight: 700;
  color: var(--oa-text);
  line-height: 1;
}

.oa-plan__price-yen {
  font-size: var(--oa-size-5);
  color: var(--oa-text);
}

.oa-plan__price-period {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  color: var(--oa-text-mute);
  letter-spacing: 0.08em;
}

.oa-plan__desc {
  font-size: var(--oa-size-2);
  line-height: 1.85;
  color: var(--oa-text-mute);
  padding-bottom: var(--oa-space-4);
  border-bottom: 1px solid var(--oa-line);
}

.oa-plan__features {
  display: flex;
  flex-direction: column;
  gap: var(--oa-space-2);
  flex: 1;
}

.oa-plan__feature {
  display: flex;
  gap: var(--oa-space-3);
  align-items: flex-start;
  font-size: var(--oa-size-2);
  line-height: 1.7;
  color: var(--oa-text);
}

.oa-plan__feature::before {
  content: "✓";
  color: var(--oa-cyan);
  font-weight: 700;
  flex-shrink: 0;
}

.oa-plan__feature--off {
  color: var(--oa-text-dim);
  text-decoration: line-through;
}

.oa-plan__feature--off::before {
  content: "—";
  color: var(--oa-text-dim);
  text-decoration: none;
}

.oa-plan__cta {
  margin-top: auto;
}

@media (max-width: 900px) {
  .oa-pricing__grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

/* ==========================================================================
   13. VOICES — 受講者の声
   ========================================================================== */
.oa-voices {
  background: var(--oa-navy);
}

.oa-voices__head {
  text-align: center;
  margin-bottom: var(--oa-space-7);
}

.oa-voices__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
}

.oa-voices__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-voices__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--oa-space-5);
}

.oa-voice {
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  padding: var(--oa-space-6);
  display: flex;
  gap: var(--oa-space-5);
  transition: transform var(--oa-trans), border var(--oa-trans);
  position: relative;
}

.oa-voice::before {
  content: "“";
  position: absolute;
  top: var(--oa-space-3);
  right: var(--oa-space-4);
  font-family: Georgia, serif;
  font-size: 4rem;
  color: var(--oa-cyan);
  opacity: 0.18;
  line-height: 1;
}

.oa-voice:hover {
  transform: translateY(-3px);
  border-color: var(--oa-cyan);
}

.oa-voice__avatar {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  display: grid;
  place-items: center;
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-7);
  font-weight: 800;
  color: var(--oa-navy);
}

.oa-voice__body {
  flex: 1;
}

.oa-voice__tags {
  display: flex;
  gap: var(--oa-space-2);
  margin-bottom: var(--oa-space-3);
  flex-wrap: wrap;
}

.oa-voice__tag {
  font-family: var(--oa-font-mono);
  background: var(--oa-navy-soft);
  color: var(--oa-cyan);
  padding: 2px 10px;
  border-radius: 2px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.oa-voice__title {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-4);
  font-weight: 700;
  color: var(--oa-text);
  line-height: 1.5;
  margin-bottom: var(--oa-space-3);
}

.oa-voice__text {
  font-size: var(--oa-size-2);
  line-height: 1.85;
  color: var(--oa-text-mute);
  margin-bottom: var(--oa-space-4);
}

.oa-voice__author {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  color: var(--oa-text-mute);
  font-weight: 600;
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .oa-voices__grid { grid-template-columns: 1fr; }
  .oa-voice { flex-direction: column; }
  .oa-voice__avatar { width: 56px; height: 56px; font-size: var(--oa-size-5); }
}

/* ==========================================================================
   14. MEDIA — メディア掲載
   ========================================================================== */
.oa-media {
  background: var(--oa-navy-deep);
  border-top: 1px solid var(--oa-line-bright);
  border-bottom: 1px solid var(--oa-line-bright);
}

.oa-media__head {
  text-align: center;
  margin-bottom: var(--oa-space-6);
}

.oa-media__eyebrow {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--oa-cyan);
  margin-bottom: var(--oa-space-2);
  text-transform: uppercase;
}

.oa-media__title {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-6);
  font-weight: 800;
  color: var(--oa-text);
}

.oa-media__list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--oa-space-4);
  align-items: center;
}

.oa-media__item {
  text-align: center;
  padding: var(--oa-space-4) var(--oa-space-2);
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-md);
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-2);
  font-weight: 700;
  color: var(--oa-text);
  letter-spacing: 0.04em;
  transition: border var(--oa-trans-fast), color var(--oa-trans-fast);
}

.oa-media__item:hover {
  border-color: var(--oa-cyan);
  color: var(--oa-cyan);
}

.oa-media__item small {
  display: block;
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--oa-text-mute);
  margin-top: 2px;
  letter-spacing: 0.16em;
}

@media (max-width: 900px) {
  .oa-media__list { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
  .oa-media__list { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================================
   15. NEWS — 3 件
   ========================================================================== */
.oa-news {
  background: var(--oa-navy);
}

.oa-news__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--oa-space-7);
  gap: var(--oa-space-5);
  flex-wrap: wrap;
}

.oa-news__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
}

.oa-news__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.oa-news__more {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 700;
  color: var(--oa-cyan);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: var(--oa-space-2);
}

.oa-news__more::after { content: "→"; transition: transform var(--oa-trans-fast); }
.oa-news__more:hover::after { transform: translateX(4px); }

.oa-news__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--oa-space-5);
}

.oa-news__item {
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--oa-trans), border var(--oa-trans);
}

.oa-news__item:hover {
  transform: translateY(-3px);
  border-color: var(--oa-cyan);
}

.oa-news__item-meta {
  display: flex;
  align-items: center;
  gap: var(--oa-space-3);
  padding: var(--oa-space-4) var(--oa-space-5) 0;
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  color: var(--oa-text-mute);
  letter-spacing: 0.08em;
}

.oa-news__item-cat {
  background: var(--oa-cyan);
  color: var(--oa-navy);
  padding: 2px 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border-radius: 2px;
}

.oa-news__item-cat--column { background: var(--oa-purple); color: var(--oa-text); }
.oa-news__item-cat--report { background: var(--oa-cyan); }

.oa-news__item-title {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-4);
  font-weight: 700;
  color: var(--oa-text);
  line-height: 1.55;
  padding: var(--oa-space-3) var(--oa-space-5) var(--oa-space-5);
}

@media (max-width: 900px) {
  .oa-news__list { grid-template-columns: 1fr; }
}

/* ==========================================================================
   16. CTA
   ========================================================================== */
.oa-cta {
  background: var(--oa-navy);
  position: relative;
  overflow: hidden;
}

.oa-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.18) 0%, transparent 50%);
  pointer-events: none;
}

.oa-cta__inner {
  position: relative;
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-xl);
  padding: var(--oa-space-9) var(--oa-space-7);
}

.oa-cta__eyebrow {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--oa-cyan);
  margin-bottom: var(--oa-space-4);
  text-transform: uppercase;
}

.oa-cta__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.4;
  color: var(--oa-text);
  margin-bottom: var(--oa-space-5);
  word-break: keep-all;
}

.oa-cta__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-top: var(--oa-space-2);
}

.oa-cta__text {
  font-size: var(--oa-size-4);
  line-height: 1.85;
  color: var(--oa-text-mute);
  margin-bottom: var(--oa-space-7);
}

.oa-cta__actions {
  display: flex;
  gap: var(--oa-space-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   17. FOOTER
   ========================================================================== */
.oa-footer {
  background: var(--oa-navy-deep);
  color: var(--oa-text);
  padding: var(--oa-space-9) 0 var(--oa-space-5);
  border-top: 1px solid var(--oa-line);
}

.oa-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--oa-space-7);
  margin-bottom: var(--oa-space-7);
}

.oa-footer__brand { display: flex; flex-direction: column; gap: var(--oa-space-3); }

.oa-footer__logo { display: flex; align-items: center; gap: var(--oa-space-3); }

.oa-footer__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--oa-radius-md);
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  color: var(--oa-navy);
  display: grid;
  place-items: center;
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-4);
  font-weight: 800;
}

.oa-footer__logo-text { display: flex; flex-direction: column; }

.oa-footer__logo-jp {
  font-size: var(--oa-size-4);
  font-weight: 700;
  color: var(--oa-text);
}

.oa-footer__logo-en {
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--oa-cyan);
}

.oa-footer__addr {
  font-size: var(--oa-size-2);
  line-height: 1.85;
  color: var(--oa-text-mute);
}

.oa-footer__col-title {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-1);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--oa-cyan);
  margin-bottom: var(--oa-space-4);
  text-transform: uppercase;
}

.oa-footer__list { display: flex; flex-direction: column; gap: var(--oa-space-3); }

.oa-footer__list a {
  font-size: var(--oa-size-2);
  color: var(--oa-text-mute);
  transition: color var(--oa-trans-fast);
}

.oa-footer__list a:hover { color: var(--oa-cyan); }

.oa-footer__bottom {
  border-top: 1px solid var(--oa-line);
  padding-top: var(--oa-space-5);
  display: flex;
  justify-content: space-between;
  gap: var(--oa-space-5);
  flex-wrap: wrap;
}

.oa-footer__copy {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-1);
  letter-spacing: 0.12em;
  color: var(--oa-text-dim);
}

.oa-footer__license {
  font-size: var(--oa-size-1);
  letter-spacing: 0.04em;
  color: var(--oa-text-dim);
}

@media (max-width: 900px) { .oa-footer__inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .oa-footer__inner { grid-template-columns: 1fr; } }

/* ==========================================================================
   18. UTILITY / LINKS
   ========================================================================== */
.oa-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--oa-space-2);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 700;
  color: var(--oa-cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color var(--oa-trans-fast);
}

.oa-link-arrow::after { content: "→"; transition: transform var(--oa-trans-fast); }
.oa-link-arrow:hover { color: var(--oa-cyan-soft); }
.oa-link-arrow:hover::after { transform: translateX(4px); }

.oa-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--oa-navy-soft);
  border: 1px solid var(--oa-line);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-1);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--oa-cyan);
  border-radius: 2px;
}

.oa-divider {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--oa-line) 50%, transparent 100%);
  margin: var(--oa-space-7) 0;
}

/* ==========================================================================
   19. ANIMATIONS / SCROLL FX
   ========================================================================== */
[data-anim] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-anim].is-in {
  opacity: 1;
  transform: translateY(0);
}

[data-anim="fade"] { transform: none; }

/* ==========================================================================
   20. REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .oa-loader__cmd { width: 19ch !important; border-right: 0 !important; }
}

/* ==========================================================================
   21. PRINT
   ========================================================================== */
@media print {
  .oa-loader, .oa-header__cta, .oa-cta, .oa-hero__counters { display: none; }
  body { background: white; color: black; }
  a { color: black; text-decoration: underline; }
}

/* ==========================================================================
   22. ACCESSIBILITY
   ========================================================================== */
.oa-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--oa-cyan);
  outline-offset: 2px;
}

/* ==========================================================================
   23. FLOAT CTA (mobile)
   ========================================================================== */
.oa-float {
  position: fixed;
  inset: auto var(--oa-space-4) var(--oa-space-4) var(--oa-space-4);
  z-index: var(--oa-z-float);
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  color: var(--oa-navy);
  padding: 14px 20px;
  border-radius: var(--oa-radius-md);
  box-shadow: var(--oa-shadow-lg);
  display: none;
  text-align: center;
  font-family: var(--oa-font-jp);
  font-weight: 700;
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .oa-float { display: block; }
}

/* ==========================================================================
   24. END (TOP styles)
   ========================================================================== */

/* ==========================================================================
   25. SUB-PAGE COMPONENTS
   ========================================================================== */
.oa-page-hero {
  background: var(--oa-navy);
  color: var(--oa-text);
  padding: var(--oa-space-9) 0 var(--oa-space-7);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--oa-line-bright);
}

.oa-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.oa-page-hero__inner {
  position: relative;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--oa-space-5);
}

.oa-page-hero__eyebrow {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--oa-cyan);
  margin-bottom: var(--oa-space-4);
  text-transform: uppercase;
}

.oa-page-hero__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.4;
  color: var(--oa-text);
  letter-spacing: 0.01em;
  margin-bottom: var(--oa-space-4);
  word-break: keep-all;
}

.oa-page-hero__sub {
  font-size: var(--oa-size-4);
  line-height: 1.85;
  color: var(--oa-text-mute);
}

/* Breadcrumb */
.oa-bread {
  background: var(--oa-navy-deep);
  padding: var(--oa-space-3) 0;
  border-bottom: 1px solid var(--oa-line);
}

.oa-bread__list {
  display: flex;
  align-items: center;
  gap: var(--oa-space-3);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-1);
  color: var(--oa-text-mute);
  flex-wrap: wrap;
}

.oa-bread__list a { color: var(--oa-text-mute); }
.oa-bread__list a:hover { color: var(--oa-cyan); }
.oa-bread__sep { color: var(--oa-text-dim); }

/* Prose */
.oa-prose {
  font-size: var(--oa-size-3);
  line-height: 1.95;
  color: var(--oa-text);
  max-width: 800px;
  margin: 0 auto;
}

.oa-prose h2 {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 800;
  color: var(--oa-text);
  margin: var(--oa-space-8) 0 var(--oa-space-4);
  padding-left: var(--oa-space-4);
  border-left: 3px solid var(--oa-cyan);
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.oa-prose h3 {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-text);
  margin: var(--oa-space-6) 0 var(--oa-space-3);
}

.oa-prose p {
  margin: var(--oa-space-4) 0;
  color: var(--oa-text-mute);
}

.oa-prose strong {
  font-weight: 700;
  color: var(--oa-cyan);
}

.oa-prose ul,
.oa-prose ol {
  margin: var(--oa-space-4) 0;
  padding-left: var(--oa-space-5);
  list-style: disc;
  color: var(--oa-text-mute);
}

.oa-prose ol { list-style: decimal; }

.oa-prose li {
  margin: var(--oa-space-2) 0;
  line-height: 1.85;
}

.oa-prose a {
  color: var(--oa-cyan);
  border-bottom: 1px solid currentColor;
  font-weight: 600;
}

.oa-prose a:hover { color: var(--oa-cyan-soft); }

.oa-prose blockquote {
  margin: var(--oa-space-5) 0;
  padding: var(--oa-space-5);
  background: var(--oa-navy-card);
  border-left: 3px solid var(--oa-cyan);
  border-radius: 0 var(--oa-radius-md) var(--oa-radius-md) 0;
  font-size: var(--oa-size-3);
  color: var(--oa-text);
  line-height: 1.85;
}

.oa-prose blockquote cite {
  display: block;
  margin-top: var(--oa-space-3);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  color: var(--oa-cyan);
  font-style: normal;
  letter-spacing: 0.08em;
}

/* Tables */
.oa-table {
  margin: var(--oa-space-5) 0;
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-md);
  overflow: hidden;
  font-size: var(--oa-size-2);
  background: var(--oa-navy-card);
}

.oa-table th {
  background: var(--oa-navy-soft);
  color: var(--oa-cyan);
  padding: var(--oa-space-3) var(--oa-space-4);
  text-align: left;
  font-family: var(--oa-font-mono);
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.oa-table td {
  padding: var(--oa-space-3) var(--oa-space-4);
  border-top: 1px solid var(--oa-line);
  color: var(--oa-text);
}

.oa-table tr:nth-child(even) td {
  background: rgba(30, 41, 59, 0.3);
}

/* TOC */
.oa-toc {
  margin: var(--oa-space-5) 0;
  padding: var(--oa-space-5);
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-left: 3px solid var(--oa-cyan);
  border-radius: var(--oa-radius-md);
}

.oa-toc__title {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--oa-cyan);
  margin-bottom: var(--oa-space-3);
  text-transform: uppercase;
}

.oa-toc__list {
  counter-reset: oa-toc;
}

.oa-toc__list li {
  counter-increment: oa-toc;
  padding: 4px 0;
  padding-left: var(--oa-space-6);
  position: relative;
}

.oa-toc__list li::before {
  content: counter(oa-toc, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--oa-font-mono);
  font-weight: 700;
  color: var(--oa-cyan);
  font-size: var(--oa-size-2);
}

.oa-toc__list a {
  font-size: var(--oa-size-2);
  color: var(--oa-text);
  font-weight: 500;
}

.oa-toc__list a:hover { color: var(--oa-cyan); }

/* Form */
.oa-form {
  display: grid;
  gap: var(--oa-space-4);
  max-width: 720px;
  margin: 0 auto;
}

.oa-form__row { display: grid; gap: var(--oa-space-2); }
.oa-form__row--two { grid-template-columns: 1fr 1fr; }

@media (max-width: 600px) {
  .oa-form__row--two { grid-template-columns: 1fr; }
}

.oa-form__label {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 700;
  color: var(--oa-cyan);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.oa-form__label-req {
  display: inline-block;
  margin-left: var(--oa-space-2);
  background: var(--oa-cyan);
  color: var(--oa-navy);
  font-size: 0.6rem;
  padding: 1px 8px;
  letter-spacing: 0.16em;
  border-radius: 2px;
}

.oa-form__input,
.oa-form__textarea,
.oa-form__select {
  padding: 12px 16px;
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-md);
  background: var(--oa-navy-card);
  color: var(--oa-text);
  font-family: inherit;
  font-size: var(--oa-size-3);
  outline: none;
  transition: border var(--oa-trans-fast);
}

.oa-form__input:focus,
.oa-form__textarea:focus,
.oa-form__select:focus {
  border-color: var(--oa-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.oa-form__textarea { min-height: 160px; resize: vertical; }

.oa-form__check {
  display: flex;
  align-items: flex-start;
  gap: var(--oa-space-3);
  font-size: var(--oa-size-2);
  color: var(--oa-text);
  line-height: 1.7;
}

.oa-form__submit {
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  color: var(--oa-navy);
  padding: 16px 32px;
  border-radius: var(--oa-radius-md);
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-4);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform var(--oa-trans-fast), box-shadow var(--oa-trans-fast);
  justify-self: center;
  min-width: 240px;
}

.oa-form__submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--oa-glow-cyan);
}

/* Page CTA */
.oa-page-cta {
  background: var(--oa-navy-card);
  padding: var(--oa-space-7) var(--oa-space-5);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-xl);
  text-align: center;
  margin: var(--oa-space-9) 0;
}

.oa-page-cta__title {
  font-family: var(--oa-font-jp);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--oa-text);
  line-height: 1.4;
  margin-bottom: var(--oa-space-3);
  word-break: keep-all;
}

.oa-page-cta__text {
  font-size: var(--oa-size-3);
  line-height: 1.85;
  color: var(--oa-text-mute);
  margin-bottom: var(--oa-space-5);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.oa-page-cta__btns {
  display: flex;
  gap: var(--oa-space-3);
  justify-content: center;
  flex-wrap: wrap;
}

.oa-page-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--oa-space-2);
  padding: 14px 30px;
  border-radius: var(--oa-radius-md);
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-3);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform var(--oa-trans-fast), box-shadow var(--oa-trans-fast);
}

.oa-page-cta__btn--primary {
  background: linear-gradient(135deg, var(--oa-cyan) 0%, var(--oa-purple) 100%);
  color: var(--oa-navy);
}

.oa-page-cta__btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--oa-glow-cyan);
  color: var(--oa-navy);
}

.oa-page-cta__btn--ghost {
  background: transparent;
  color: var(--oa-cyan);
  border: 1px solid var(--oa-cyan);
}

.oa-page-cta__btn--ghost:hover {
  background: var(--oa-cyan);
  color: var(--oa-navy);
  transform: translateY(-2px);
}

/* prose-a が btn を上書きする事故対策 (sushi 教訓) */
.oa-prose .oa-page-cta__btn { border-bottom: 0; padding-bottom: 14px; }
.oa-prose .oa-page-cta__btn--primary { color: var(--oa-navy); }
.oa-prose .oa-page-cta__btn--primary:hover { color: var(--oa-navy); }
.oa-prose .oa-page-cta__btn--ghost { color: var(--oa-cyan); }
.oa-prose .oa-page-cta__btn--ghost:hover { color: var(--oa-navy); }

/* Generic Grid / Card */
.oa-grid { display: grid; gap: var(--oa-space-5); }
.oa-grid--2 { grid-template-columns: repeat(2, 1fr); }
.oa-grid--3 { grid-template-columns: repeat(3, 1fr); }
.oa-grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .oa-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .oa-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .oa-grid--2,
  .oa-grid--3,
  .oa-grid--4 { grid-template-columns: 1fr; }
}

.oa-card {
  background: var(--oa-navy-card);
  padding: var(--oa-space-5);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  transition: transform var(--oa-trans), border var(--oa-trans);
}

.oa-card:hover {
  transform: translateY(-3px);
  border-color: var(--oa-cyan);
}

.oa-card__num {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--oa-cyan);
  display: block;
  margin-bottom: var(--oa-space-2);
  text-transform: uppercase;
}

.oa-card__title {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-text);
  margin-bottom: var(--oa-space-3);
  line-height: 1.5;
}

.oa-card__text {
  font-size: var(--oa-size-2);
  line-height: 1.85;
  color: var(--oa-text-mute);
}

/* FAQ */
.oa-faq {
  display: flex;
  flex-direction: column;
  gap: var(--oa-space-3);
  max-width: 880px;
  margin: 0 auto;
}

.oa-faq__item {
  border: 1px solid var(--oa-line);
  background: var(--oa-navy-card);
  border-radius: var(--oa-radius-md);
  overflow: hidden;
}

.oa-faq__q {
  width: 100%;
  padding: var(--oa-space-4) var(--oa-space-5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--oa-space-4);
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-3);
  font-weight: 700;
  color: var(--oa-text);
  text-align: left;
  letter-spacing: 0.01em;
  transition: background var(--oa-trans-fast);
}

.oa-faq__q:hover { background: var(--oa-navy-soft); }

.oa-faq__q::before {
  content: "Q";
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-cyan);
  flex-shrink: 0;
  width: 32px;
}

.oa-faq__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  position: relative;
  transition: transform var(--oa-trans);
}

.oa-faq__icon::before,
.oa-faq__icon::after {
  content: "";
  position: absolute;
  background: var(--oa-cyan);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.oa-faq__icon::before { width: 12px; height: 1.5px; }
.oa-faq__icon::after { width: 1.5px; height: 12px; transition: transform var(--oa-trans); }

.oa-faq__item.is-open .oa-faq__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.oa-faq__a {
  display: none;
  padding: 0 var(--oa-space-5) var(--oa-space-5);
  font-size: var(--oa-size-2);
  line-height: 1.95;
  color: var(--oa-text-mute);
}

.oa-faq__a::before {
  content: "A";
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-5);
  font-weight: 700;
  color: var(--oa-purple);
  display: inline-block;
  width: 32px;
  vertical-align: top;
}

.oa-faq__item.is-open .oa-faq__a {
  display: block;
}

/* Tabs */
.oa-tabs {
  display: flex;
  gap: var(--oa-space-2);
  margin-bottom: var(--oa-space-5);
  flex-wrap: wrap;
  justify-content: center;
}

.oa-tabs__btn {
  padding: 10px 24px;
  border-radius: var(--oa-radius-pill);
  background: var(--oa-navy-soft);
  border: 1px solid var(--oa-line);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 700;
  color: var(--oa-text-mute);
  letter-spacing: 0.08em;
  transition: background var(--oa-trans-fast), color var(--oa-trans-fast), border var(--oa-trans-fast);
}

.oa-tabs__btn.is-active,
.oa-tabs__btn:hover {
  background: var(--oa-cyan);
  color: var(--oa-navy);
  border-color: var(--oa-cyan);
}

/* ==========================================================================
   26. NEWS LIST / ARTICLE
   ========================================================================== */
.oa-news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--oa-space-5);
}

@media (max-width: 900px) { .oa-news-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .oa-news-list { grid-template-columns: 1fr; } }

.oa-news-list__item {
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-lg);
  overflow: hidden;
  transition: transform var(--oa-trans), border var(--oa-trans);
  display: flex;
  flex-direction: column;
}

.oa-news-list__item:hover {
  transform: translateY(-3px);
  border-color: var(--oa-cyan);
}

.oa-news-list__body {
  padding: var(--oa-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--oa-space-2);
  flex: 1;
}

.oa-news-list__meta {
  display: flex;
  gap: var(--oa-space-3);
  font-family: var(--oa-font-mono);
  font-size: 0.7rem;
  color: var(--oa-text-mute);
  letter-spacing: 0.08em;
}

.oa-news-list__cat {
  background: var(--oa-cyan);
  color: var(--oa-navy);
  padding: 2px 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border-radius: 2px;
}

.oa-news-list__title {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-3);
  font-weight: 700;
  color: var(--oa-text);
  line-height: 1.55;
}

/* Article */
.oa-article-hero {
  position: relative;
  background: var(--oa-navy-deep);
  color: var(--oa-text);
  padding: var(--oa-space-9) var(--oa-space-5);
  margin-bottom: var(--oa-space-7);
  text-align: center;
  border: 1px solid var(--oa-line);
  border-radius: var(--oa-radius-xl);
  overflow: hidden;
}

.oa-article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 30%, rgba(6, 182, 212, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.oa-article-hero__title {
  position: relative;
  font-family: var(--oa-font-jp);
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: 0.01em;
  max-width: 800px;
  margin: 0 auto;
  word-break: keep-all;
}

.oa-article-meta {
  display: flex;
  gap: var(--oa-space-4);
  margin-bottom: var(--oa-space-5);
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  color: var(--oa-text-mute);
  flex-wrap: wrap;
}

.oa-article-meta__cat {
  background: var(--oa-cyan);
  color: var(--oa-navy);
  padding: 3px 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  text-transform: uppercase;
  border-radius: 2px;
}

.oa-callout {
  margin: var(--oa-space-5) 0;
  padding: var(--oa-space-5);
  background: var(--oa-navy-card);
  border: 1px solid var(--oa-line);
  border-left: 3px solid var(--oa-cyan);
  border-radius: 0 var(--oa-radius-md) var(--oa-radius-md) 0;
  display: grid;
  gap: var(--oa-space-2);
}

.oa-callout__title {
  font-family: var(--oa-font-mono);
  font-size: var(--oa-size-2);
  font-weight: 700;
  color: var(--oa-cyan);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.oa-callout__text {
  font-size: var(--oa-size-2);
  line-height: 1.95;
  color: var(--oa-text);
}

.oa-related {
  margin-top: var(--oa-space-9);
  padding-top: var(--oa-space-7);
  border-top: 1px solid var(--oa-line);
}

.oa-related__title {
  font-family: var(--oa-font-jp);
  font-size: var(--oa-size-5);
  font-weight: 800;
  color: var(--oa-text);
  margin-bottom: var(--oa-space-5);
}

.oa-prose-dropcap p:first-of-type::first-letter {
  font-family: var(--oa-font-mono);
  font-size: 4rem;
  font-weight: 700;
  float: left;
  line-height: 0.9;
  margin: 6px 12px 0 0;
  color: var(--oa-cyan);
}

/* ==========================================================================
   27. END
   ========================================================================== */

/* --------------------------------------------------------------------------
   27. WP Block FSE Header & Navigation
   -------------------------------------------------------------------------- */

html { overflow-x: hidden; }
.wp-site-blocks { overflow-x: hidden; }

.irodori-header {
  position: sticky;
  top: 0; left: 0; right: 0;
  width: 100%;
  z-index: 800;
  background: transparent;
  color: #fff;
  transition: background 0.4s ease, box-shadow 0.4s ease, color 0.4s ease;
}
.irodori-header.is-scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--oa-shadow-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--oa-text);
}
.irodori-header__inner {
  height: 72px;
  padding: 0 clamp(20px, 4vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.irodori-header__logo .wp-block-site-logo img {
  max-height: 44px;
  width: auto;
}
.irodori-header .wp-block-navigation-item__content {
  color: inherit;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.irodori-header .wp-block-navigation-item__content:hover { opacity: 0.7; }
.irodori-header .wp-block-navigation .wp-block-navigation-item { list-style: none; }
.irodori-header__cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  background: #1a5276;
  color: #fff !important;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  text-decoration: none;
  transition: opacity 0.2s;
}
.irodori-header__cta-btn:hover { opacity: 0.85; }
.irodori-header .wp-block-navigation__responsive-container-open,
.irodori-header .wp-block-navigation__responsive-container-close { display: none !important; }
.irodori-header .wp-block-navigation__responsive-container {
  display: contents !important;
  background: none !important;
}
.wp-site-blocks > * + * { margin-block-start: 0 !important; }
footer .wp-block-navigation { flex-direction: column !important; }
.wp-block-group.irodori-section.is-layout-constrained > *,
.wp-block-group.irodori-section > * {
  max-width: 100% !important;
  width: 100%;
  margin-left: 0 !important;
  margin-right: 0 !important;
}
.wp-block-post-content > .wp-block-group.irodori-section,
.wp-block-post-content > .wp-block-group.irodori-section + .wp-block-group.irodori-section {
  margin-block: 0;
}
@media (max-width: 1100px) {
  .irodori-header__toggle {
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    gap: 6px; width: 34px; height: 34px; cursor: pointer; position: relative;
    z-index: 10001; flex-shrink: 0;
  }
  .irodori-header__toggle span {
    display: block; width: 22px; height: 1.8px;
    background: currentColor; transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .irodori-header__toggle-input { display: none; }
  .wp-block-group.irodori-header__nav {
    display: none; position: fixed; inset: 0;
    background: rgba(255,255,255,0.98); z-index: 10000;
    flex-direction: column; align-items: center; justify-content: center; padding: 40px;
  }
  #irodori-nav-toggle:checked ~ .wp-block-group.irodori-header__nav { display: flex; }
  #irodori-nav-toggle:checked ~ label.irodori-header__toggle span:nth-child(1) {
    transform: translateY(7.8px) rotate(45deg);
  }
  #irodori-nav-toggle:checked ~ label.irodori-header__toggle span:nth-child(2) { opacity: 0; }
  #irodori-nav-toggle:checked ~ label.irodori-header__toggle span:nth-child(3) {
    transform: translateY(-7.8px) rotate(-45deg);
  }
  .irodori-header--hamburger .irodori-header__nav .wp-block-navigation {
    display: flex !important; flex-direction: column; align-items: center; width: 100%;
  }
  .irodori-header--hamburger .irodori-header__nav .wp-block-navigation__container {
    display: flex; flex-direction: column; align-items: center;
    gap: 2rem; list-style: none; margin: 0; padding: 0;
  }
  .irodori-header--hamburger .irodori-header__nav .wp-block-navigation__container a {
    font-size: clamp(18px, 4vw, 24px); font-weight: 600; letter-spacing: 0.06em;
    color: var(--oa-text);
  }
  .irodori-header__cta { margin-top: 32px; }
}

/* ===== WP 7.0 Bug Fixes ===== */

/* ---------------------------------------------------------------
   WP 7.0 Fix: ナビゲーション デスクトップ表示強制
   親テーマ .irodori-header--hamburger が position:fixed/opacity:0 を
   全ブレークポイントに適用するため !important で解除
   --------------------------------------------------------------- */
@media (min-width: 1101px) {
  .irodori-header .wp-block-group.irodori-header__nav {
    position: relative !important;
    opacity: 1 !important;
    visibility: visible !important;
    inset: auto !important;
    background: none !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 24px !important;
    padding: 0 !important;
    z-index: auto !important;
  }
  .irodori-header__toggle {
    display: none !important;
  }
}

/* ---------------------------------------------------------------
   WP 7.0 Fix: ヒーロー背景 全幅解除
   WP is-layout-constrained が max-width:1280px/margin:auto を
   hero bg 要素に適用するため強制解除
   --------------------------------------------------------------- */
.is-layout-constrained > [class*="-hero__bg"],
.is-layout-constrained > [class*="-hero-bg"],
.is-layout-constrained > [class*="-hero__slide"],
.is-layout-constrained > [class*="-hero__image"],
.is-layout-constrained > [class*="-hero__visual"] {
  max-width: none !important;
  width: 100% !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
}